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    <title>Document</title>
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<script>
    //str.split(分隔符)，将字符串以特定发分隔符分割
    var str = "?username=zhangsan&age=20&sex=male";
    str = str.slice(1);
    var arr = str.split("&");
    console.log(arr[0]);
    for(var i = 0; i < arr.length; i++){
        var childStr = arr[i].split("=");
        console.log(childStr[i]);
    }
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